`timers throttle spf`

Syntax

timers throttle spf start-time <milliseconds> hold-time <milliseconds>
max-wait-time <milliseconds>

no timers throttle spf

Description

Configures timers for SPF calculation. There are three timers:

start-time Is the initial delay before an SPF calculation is started. Default is 200 milliseconds.
hold-time Is the progressive backoff time to wait before next scheduled SPF calculation. Default is 1000 milliseconds. If a route change event occurs during this period, the value doubles until it reaches the max-wait-time.
max-wait-time Is the maximum time to wait before the next scheduled SPF calculation. Default is 5000 milliseconds. This is used to limit the SPF hold timer and also defines the time to be considered for which the OSPF LSDB has to be stable, after which the SPF throttle mechanism is reset.

The no form of this command sets all the configured non-default timers to default value.

Command context

config-ospf

Parameters

<MILLISECONDS>: Time in milliseconds to set timer for initial SPF delay. Default: 200.
<MILLISECONDS>: Time in milliseconds to set the minimum hold time between two consecutive SPF calculations. Default: 1000.
<MILLISECONDS>: Time in milliseconds to set the maximum wait time between two consecutive SPF calculations. Default: 5000.

Authority

Administrators or local user group members with execution rights for this command.

Examples

Setting non-default timer values for SPF throttling:

switch(config)# router ospfv3 1
switch(config-ospfv3-1)# timers throttling spf start-time 500 hold-time 3000 max-wait-time 9000
Switch(config-ospfv3-1)# show running-config current-context
router ospfv3 1
		area 0.0.0.0
		area 0.0.0.1
		area 0.0.0.2 nssa no-summary
		area 0.0.0.3 stub

Setting default timer values for SPF throttling after configuring non-default values:

switch(config)# router ospfv3 1
switch(config-ospfv3-1)# no timers throttling spf